253023661344 has 24 divisors (see below), whose sum is σ = 664187111280. Its totient is φ = 84341220416.

The previous prime is 253023661313. The next prime is 253023661427. The reversal of 253023661344 is 443166320352.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317831474 + ... + 1317831665.

It is an arithmetic number, because the mean of its divisors is an integer number (27674462970).

Almost surely, 2^253023661344 is an apocalyptic number.

253023661344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

253023661344 is an abundant number, since it is smaller than the sum of its proper divisors (411163449936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253023661344 is a wasteful number, since it uses less digits than its factorization.

253023661344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635663152 (or 2635663144 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 253023661344 its reverse (443166320352), we get a palindrome (696189981696).

The spelling of 253023661344 in words is "two hundred fifty-three billion, twenty-three million, six hundred sixty-one thousand, three hundred forty-four".